<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" label-width="68px">
      <el-form-item label="标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入标题"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="简介" prop="synopsis">
        <el-input
          v-model="queryParams.synopsis"
          placeholder="请输入简介"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="内容" prop="content">
        <el-input
          v-model="queryParams.content"
          placeholder="请输入内容"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态" prop="state">
        <el-select v-model="queryParams.state" placeholder="请选择分类" clearable size="small">
          <el-option v-for="dict in newsState" :key="dict.dictvalue" :label="dict.dictLabel" :value="dict.dictValue"/>
        </el-select>
      </el-form-item>




      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:news:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:news:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:news:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:news:export']"
        >导出</el-button>
      </el-col>
    </el-row>

    <el-table v-loading="loading" :data="newsList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="序号" align="center" prop="tradeNewsId" />
      <el-table-column label="标题" align="center" prop="title" />
      <el-table-column label="简介" align="center" prop="synopsis" />

      <el-table-column label="状态" align="center">
        <template slot-scope="scope">
          <el-switch
            v-model="scope.row.state"
            :active-value="0"
            :inactive-value="1"
            @change="handleStateChange(scope.row)"
          ></el-switch>
        </template>
      </el-table-column>

      <!--<el-table-column label="分类" align="center" prop="type" />
      <el-table-column label="简介图" align="center" prop="image" /> -->
      <el-table-column label="新闻顺序" align="center" prop="newsOrder" />
      <!--<el-table-column label="查看次数" align="center" prop="seeNum" />  -->
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['manage:news:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['manage:news:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改行业资讯（新闻）对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入标题" />
        </el-form-item>
        <el-form-item label="简介" prop="synopsis">
          <el-input v-model="form.synopsis" placeholder="请输入简介" />
        </el-form-item>

        <el-form-item label="状态" prop="state">
          <el-select v-model="form.state" placeholder="请选择分类">
            <el-option v-for="dict in newsState" :key="dict.dictvalue" :label="dict.dictLabel" :value="dict.dictValue"/>
          </el-select>
        </el-form-item>

        <el-upload class="upload-demo"
                   action="上传的地址"
                   list-type="picture-card"
                   :limit='1'
        :auto-upload="false"
        :on-exceed='uploadOverrun'
        :on-preview="handleContImgPreview"
        :on-remove='handleRmove'
        :http-request='submitUpload'
        :file-list="fileList"
        ref="upload"
        >
        <i class="el-icon-plus"></i>
        </el-upload>
        <el-dialog :visible.sync="dialogVisible" :append-to-body="true" :close-on-click-modal="false">
          <img width="100%" :src="dialogImageUrl" alt="">
        </el-dialog>



      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listNews, getNews, delNews, addNews, updateNews, exportNews ,changeNewstate} from "@/api/manage/news";

export default {
  name: "News",
  data() {
    return {
      newsState:[{dictValue: '0', dictLabel: '待展示'},{dictValue: '0', dictLabel: '展示中'}],
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 总条数
      total: 0,
      // 行业资讯（新闻）表格数据
      newsList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        title: undefined,
        synopsis: undefined,
        content: undefined,
        state: undefined,
        type: undefined,
        image: undefined,
        newsOrder: undefined,
        seeNum: undefined
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询行业资讯（新闻）列表 */
    getList() {
      this.loading = true;
      listNews(this.queryParams).then(response => {
        this.newsList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        tradeNewsId: undefined,
        title: undefined,
        synopsis: undefined,
        content: undefined,
        createTime: undefined,
        state: undefined,
        type: undefined,
        image: undefined,
        newsOrder: undefined,
        seeNum: undefined
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.tradeNewsId)
      this.single = selection.length!=1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加行业资讯（新闻）";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const tradeNewsId = row.tradeNewsId || this.ids
      getNews(tradeNewsId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改行业资讯（新闻）";
      });
    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.tradeNewsId != undefined) {
            updateNews(this.form).then(response => {
              if (response.code === 200) {
                this.msgSuccess("修改成功");
                this.open = false;
                this.getList();
              }
            });
          } else {
            addNews(this.form).then(response => {
              if (response.code === 200) {
                this.msgSuccess("新增成功");
                this.open = false;
                this.getList();
              }
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const tradeNewsIds = row.tradeNewsId || this.ids;
      this.$confirm('是否确认删除行业资讯（新闻）编号为"' + tradeNewsIds + '"的数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(function() {
          return delNews(tradeNewsIds);
        }).then(() => {
          this.getList();
          this.msgSuccess("删除成功");
        }).catch(function() {});
    },
    /** 导出按钮操作 */
    handleExport() {
      const queryParams = this.queryParams;
      this.$confirm('是否确认导出所有行业资讯（新闻）数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(function() {
          return exportNews(queryParams);
        }).then(response => {
          this.download(response.msg);
        }).catch(function() {});
    },
    /** 修改状态值*/
    handleStateChange(row) {
      let text=row.state === 0 ? "展示":"停止展示";
      this.$confirm('确认要' + text + '"' + row.title + '"吗?', "警告", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(function() {
        return changeNewstate(row.tradeNewsId, row.state);
      }).then(() => {
        this.msgSuccess(text + "成功");
      }).catch(function() {
        row.state = row.state === 0 ? 1 : 0;
      });
    },
    submitUpload(){
      console.log("上传");
    }
  }
};
</script>
